A huge drawing showing a naked Prime Minister Tony Blair and his wife Cherie leaving the Downing Street office was unveiled Wednesday as his premiership enters its last days.

The charcoal work, measuring 4.5 metres by 1.5 metres, by artist Michael Sandle is going on display at London's Royal Academy of Arts as part of its prestigious annual summer exhibition.

The work entitled "Iraq Triptych", which has won the top Hugh Casson prize for drawing, shows Blair and his wife covering their genitals and is based on medieval biblical paintings of Adam and Eve leaving the Garden of Eden in disgrace.

With the famous black door of 10 Downing Street behind them, the figures are flanked by piles of bones, body parts and skulls.

"I wasn't going to submit this year but I suddenly felt overcome with anger at the way Blair has messed up," Sandle told The Guardian newspaper.

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